Path: utzoo!utgpu!watmath!uunet!fernwood!apple!brutus.cs.uiuc.edu!psuvax1!gatech!ncar!asuvax!noao!arizona!naucse!jdc
From: jdc@naucse.UUCP (John Campbell)
Newsgroups: unix-pc.sources
Subject: gnuplot.shar.07
Message-ID: <1686@naucse.UUCP>
Date: 4 Sep 89 16:43:23 GMT
Organization: Northern Arizona University, Flagstaff, AZ
Lines: 1496


#! /bin/sh
# This is a shell archive.  Remove anything before this line, then unpack
# it by saving it into a file and typing "sh file".  To overwrite existing
# files, type "sh file -c".  You can also feed this as standard input via
# unshar, or by typing "sh <file", e.g..  If this archive is complete, you
# will see the following message at the end:
#		"End of archive 7 (of 7)."
# Contents:  ./docs/gnuplot.doc
# Wrapped by jdc@naucse on Mon Sep  4 09:22:38 1989
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
if test -f './docs/gnuplot.doc' -a "${1}" != "-c" ; then 
  echo shar: Will not clobber existing file \"'./docs/gnuplot.doc'\"
else
echo shar: Extracting \"'./docs/gnuplot.doc'\" \(27576 characters\)
sed "s/^X//" >'./docs/gnuplot.doc' <<'END_OF_FILE'
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X				 GNUPLOT
X		     An	Interactive Plotting Program
X
X
X
X		      Thomas Williams &	Colin Kelley
X
X		  Department of	Electrical Engineering
X			   Villanova University
X			   Villanova, PA  19085
X			       May 26, 1989
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X			       May 26, 1989
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X
X
X				 _I_N_T_R_O_D_U_C_T_I_O_N
X
X   GNUPLOT is a	command-driven interactive function plotting program.
X   It is case sensitive	(commands and function names written in	lower-
X   case	are not	the same as those written in CAPS).  All command names
X   may be abbreviated, as long as the abbreviation is not ambiguous.
X   Any number of commands may appear on	a line,	separated by semicolons
X   (;).
X
X
X
X
X   _1.  _c_l_e_a_r
X
X
X   This	command	erases the current screen or output device as specified
X   by 'set output'.  This usually generates a formfeed on hardcopy dev-
X   ices.  Use 'set terminal' to	set the	device type.
X
X
X
X
X   _2.  _e_x_i_t
X
X
X   'exit', 'quit' and your computer's END-OF-FILE character will exit
X   GNUPLOT.  All these commands	will clear the output device (as the
X   'clear' command does) before	exiting.
X
X
X
X
X   _3.  _e_x_p_r_e_s_s_i_o_n_s
X
X
X
X
X
X
X	_3._1.  _f_u_n_c_t_i_o_n_s
X
X
X
X
X
X
X
X
X
X
X			       May 26, 1989
X
X
X
X
X
X
X				 GNUPLOT			 Page 2
X
X
X	     _3._1._1.  _a_b_s
X
X
X	     This function returns the absolute	value of its argument.
X	     The returned value	is of the same type as the argument.
X
X	     For complex arguments, abs(x) is defined as the length of
X	     x in the complex plane [i.e.  sqrt(real(x)**2 +
X	     imag(x)**2) ].
X
X
X
X	     _3._1._2.  _a_c_o_s
X
X
X	     This function returns the arc cosine (inverse cosine) of
X	     its argument.  'acos' returns its argument	in radians.
X
X
X
X	     _3._1._3.  _a_r_g
X
X
X	     This function returns the phase of	a complex number, in
X	     radians.
X
X
X
X	     _3._1._4.  _a_s_i_n
X
X
X	     This function returns the arc sin (inverse	sin) of	its
X	     argument.	'asin' returns its argument in radians.
X
X
X
X	     _3._1._5.  _a_t_a_n
X
X
X	     This function returns the arc tangent (inverse tangent) of
X	     its argument.  'atan' returns its argument	in radians.
X
X
X
X	     _3._1._6.  _b_e_s_j_0
X
X
X	     This function returns the j0th Bessel function of its
X	     argument.	'besj0'	expects	its argument to	be in radians.
X
X
X
X
X
X
X
X			       May 26, 1989
X
X
X
X
X
X
X				 GNUPLOT			 Page 3
X
X
X	     _3._1._7.  _b_e_s_j_1
X
X
X	     This function returns the j1st Bessel function of its
X	     argument.	'besj1'	expects	its argument to	be in radians.
X
X
X
X	     _3._1._8.  _b_e_s_y_0
X
X
X	     This function returns the y0th Bessel function of its
X	     argument.	'besy0'	expects	its argument to	be in radians.
X
X
X
X	     _3._1._9.  _b_e_s_y_1
X
X
X	     This function returns the y1st Bessel function of its
X	     argument.	'besy1'	expects	its argument to	be in radians.
X
X
X
X	     _3._1._1_0.  _c_e_i_l
X
X
X	     This function returns the largest integer not less	than
X	     its argument.  For	complex	numbers, 'ceil'	returns	the
X	     largest integer not less than the real part of its	argu-
X	     ment.
X
X
X
X	     _3._1._1_1.  _c_o_s
X
X
X	     This function returns the cosine of its argument.	'cos'
X	     expects its argument to be	in radians.
X
X
X
X	     _3._1._1_2.  _c_o_s_h
X
X
X	     This function returns the hyperbolic cosine of its	argu-
X	     ment.  'cosh' expects its argument	to be in radians.
X
X
X
X	     _3._1._1_3.  _e_x_p
X
X
X
X
X
X			       May 26, 1989
X
X
X
X
X
X
X				 GNUPLOT			 Page 4
X
X
X	     This function returns the exponential function of its
X	     argument (e raised	to the power of	its argument).
X
X
X
X	     _3._1._1_4.  _f_l_o_o_r
X
X
X	     This function returns the smallest	integer	not greater
X	     than its argument.	 For complex numbers, 'floor' returns
X	     the smallest integer not greater than the real part of its
X	     argument.
X
X
X
X	     _3._1._1_5.  _i_m_a_g
X
X
X	     This function returns the imaginary part of its argument
X	     as	a real number.
X
X
X
X	     _3._1._1_6.  _i_n_t
X
X
X	     This function returns the integer part of its argument,
X	     truncated toward zero.
X
X
X
X	     _3._1._1_7.  _l_o_g
X
X
X	     This function returns the natural logarithm (base e) of
X	     its argument.
X
X
X
X	     _3._1._1_8.  _l_o_g_1_0
X
X
X	     This function returns the logarithm (base 10) of its argu-
X	     ment.
X
X
X
X	     _3._1._1_9.  _r_e_a_l
X
X
X	     This function returns the real part of its	argument.
X
X
X
X
X
X			       May 26, 1989
X
X
X
X
X
X
X				 GNUPLOT			 Page 5
X
X
X	     _3._1._2_0.  _s_g_n
X
X
X	     This function returns 1 if	its argument is	positive, -1 if
X	     its argument is negative, and 0 if	its argument is	0.  If
X	     the argument is a complex value, the imaginary component
X	     is	ignored.
X
X
X
X	     _3._1._2_1.  _s_i_n
X
X
X	     This function returns the sine of its argument.  'sin'
X	     expects its argument to be	in radians.
X
X
X
X	     _3._1._2_2.  _s_i_n_h
X
X
X	     This function returns the hyperbolic sine of its argument.
X	     'sinh' expects its	argument to be in radians.
X
X
X
X	     _3._1._2_3.  _s_q_r_t
X
X
X	     This function returns the square root of its argument.
X
X
X
X	     _3._1._2_4.  _t_a_n
X
X
X	     This function returns the tangent of its argument.	 'tan'
X	     expects its argument to be	in radians.
X
X
X
X	     _3._1._2_5.  _t_a_n_h
X
X
X	     This function returns the hyperbolic tangent of its argu-
X	     ment.  'tanh' expects its argument	to be in radians.
X
X
X
X	_3._2.  _o_p_e_r_a_t_o_r_s
X
X
X
X
X
X
X			       May 26, 1989
X
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X
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X				 GNUPLOT			 Page 6
X
X
X	     _3._2._1.  _b_i_n_a_r_y
X
X
X	     The following is a	list of	all the	binary operators and
X	     their usages:
X
X	      Symbol	     Example	      Explanation
X	       **	      a**b	       exponentiation
X	       *	      a*b	       multiplication
X	       /	      a/b	       division
X	       %	      a%b	     * modulo
X	       +	      a+b	       addition
X	       -	      a-b	       subtraction
X	       ==	      a==b	       equality
X	       !=	      a!=b	       inequality
X	       &	      a&b	     * bitwise and
X	       ^	      a^b	     * bitwise exclusive or
X	       |	      a|b	     * bitwise inclusive or
X	       &&	      a&&b	     * logical and
X	       ||	      a||b	     * logical or
X	       ?:	      a?b:c	     * ternary operation
X
X	     (*) Starred explanations indicate that the	operator
X	     requires integer arguments.
X
X	     Logical AND (&&) and OR (||) short-circuit	the way	they do
X	     in	C.  That is, the second	&& operand is not evaluated if
X	     the first is false; the second || operand is not evaluated
X	     if	the first is true.
X
X	     The ternary operator evaluates its	first argument (a).  If
X	     it	is true	(non-zero) the second argument (b) is evaluated
X	     and returned, otherwise the third argument	(c) is
X	     evaluated and returned.
X
X
X
X	     _3._2._2.  _u_n_a_r_y
X
X
X	     The following is a	list of	all the	unary operators	and
X	     their usages:
X
X	      Symbol	     Example	      Explanation
X	       -	      -a	       unary minus
X	       ~	      ~a	     * one's complement
X	       !	      !a	     * logical negation
X	       !	      a!	     * factorial
X
X	     (*) Starred explanations indicate that the	operator
X	     requires an integer argument.
X
X	     The factorial operator returns a real number to allow a
X
X
X
X			       May 26, 1989
X
X
X
X
X
X
X				 GNUPLOT			 Page 7
X
X
X	     greater range.
X
X
X
X
X   _4.  _h_e_l_p
X
X
X   The 'help' command displays on-line help.  To specify information on
X   a particular	topic use the syntax:
X
X       help <topic>
X
X   Help	is actually a separate program.	 If help doesn't work for you,
X   ask your administrator how to set up	the GNUHELP environment	vari-
X   able	(and possibly the HELPDIR environment variable).
X
X   You may exit	the help utility and return to GNUPLOT by either press-
X   ing <Return>(s) at the 'HELP	>' prompt or pressing your computer's
X   END-OF-FILE character at any	help prompt.
X
X
X
X
X   _5.  _l_o_a_d
X
X
X   This	command	executes each line of the specified input file as if it
X   had been typed in interactively.  Files created by the 'save' com-
X   mand	can later be 'load'ed.	Any text file containing valid commands
X   can be created and then executed by the 'load' command.  Files being
X   'load'ed may	themselves contain 'load' commands.  Lines beginning
X   with	# (or !	 if using VMS) will be treated as comments and ignored.
X
X   The 'load' command must be the last command on the line.
X
X   Syntax:
X	   load	<input-file>
X
X   The name of the input file must be enclosed in quotes.
X
X   Examples:
X
X	   load	'work.gnu'
X	   load	"func.dat"
X
X
X
X
X   _6.  _p_a_u_s_e
X
X
X   Pause is useful in conjunction with `load` files.  The command
X
X
X
X			       May 26, 1989
X
X
X
X
X
X
X				 GNUPLOT			 Page 8
X
X
X   'pause' displays any	text associated	with the command and then waits
X   the specified amount	of time.  This allows one to build a 'load'
X   file	and control the	amount of time a finished graph	is displayed.
X   The first argument is an expression that can	be -1, 0, 1, 2,	...  -1
X   will	wait until a carriage return is	hit.  0	won't pause at all, and
X   1, 2, etc. will wait	the specified number of	seconds.
X
X   Note: Since pause is	not part of the	plot it	may interact with dif-
X   ferent device drivers differently (depending	upon how text and
X   graphics are	mixed).
X
X   Examples:
X	   pause -1    ! Wait until a carriage return is hit
X	   pause 3     ! Wait three seconds
X	   pause -1  "Hit return to continue"
X	   pause 10  "Isn't this pretty?  It's a cubic-spline."
X
X   Syntax:
X	   pause <expression> ["string"]
X
X
X
X
X   _7.  _p_l_o_t
X
X
X
X
X
X
X	_7._1.  _d_a_t_a__f_i_l_e
X
X
X	Discrete data contained	in a file can displayed	by specifying
X	the name of the	data file (enclosed in quotes) on the 'plot'
X	command	line.
X
X	Data files should contain one data point per line.  A data
X	point may be specified either as an X and Y value separated by
X	blank space, or	as just	the Y value, in	which case the program
X	will use the number of the coordinate as the X value.  Coordi-
X	nate numbers starts at 0 and are incremented for each data
X	point read.  Blank lines and lines beginning with # will be
X	treated	as comments and	ignored.
X
X
X	This example compares the data in the file population.dat to a
X	theoretical curve:
X
X		pop(x) = 103*exp((1965-x)/10)
X		plot [1960:1990] 'population.dat', pop(x)
X
X	The file population.dat	might contain:
X
X
X
X			       May 26, 1989
X
X
X
X
X
X
X				 GNUPLOT			 Page 9
X
X
X	 # Gnu population in Antarctica	since 1965
X	 1965	103
X	 1970	55
X	 1975	34
X	 1980	24
X	 1985	10
X
X
X
X	_7._2.  _r_a_n_g_e_s
X
X
X	This option specifies the region of the	plot which will	be
X	displayed.
X
X	Ranges may be provided on the 'plot' command line as synonyms
X	for the	'set xrange' and 'set yrange' commands.
X
X	Syntax:
X		[{dummy-var =} {xmin : xmax}] {	[{ymin : ymax}]	}
X
X	Where dummy-var	is the independent variable (the default is
X	'x', but this may be changed with the 'set dummy' command) and
X	the min	and max	terms can be expressions or constants.
X
X	Both the min and max terms are optional.  The ':' is also
X	optional if neither a min nor a	max term is specified.	This
X	allows '[]' to be used as a null range specification.
X
X	Specifying a Y range turns autoscaling OFF.
X
X
X	Examples:
X
X	This uses current ranges:
X		plot cos(x)
X
X	This sets the xrange only:
X		plot [-10:30] sin(pi*x)/(pi*x)
X
X	This is	the same, but uses t as	the dummy-variable:
X		plot [t	= -10 :30]  sin(pi*t)/(pi*t)
X
X	This sets both the x and yranges:
X		plot [-pi:pi] [-3:3]  tan(x), 1/x
X
X	This sets only the yrange:
X		plot []	[-2:sin(5)*-8] sin(x)**besj0(x)
X
X	This sets xmax and ymin	only:
X		plot [:200] [-pi:]  exp(sin(x))
X
X
X
X
X
X			       May 26, 1989
X
X
X
X
X
X
X				 GNUPLOT			Page 10
X
X
X	_7._3.  _s_t_y_l_e
X
X
X	Plots may be displayed in one of three styles: 'lines',
X	'points', or 'impulses'.  The 'lines' style connects adjacent
X	points with lines. The 'points'	style displays a small symbol
X	at each	point.	The 'impulses' style displays a	vertical line
X	from the X axis	to each	point.
X
X	Default	styles are chosen with the 'set	function style'	and
X	'set data style' commands.
X
X	Syntax:
X		with <style>
X
X	Where <style> is one of	'lines', 'points', or 'impulses'.
X	These keywords may be abbreviated.
X
X
X	Examples:
X
X	This plots sin(x) with impulses:
X		plot sin(x) with impulses
X
X	This plots sin(x) with points, cos(x) default:
X		plot [-9:30]  sin(x) w points, cos(x)
X
X	This plots tan(x) with the default function style, "data.1"
X	with lines:
X		plot []	[-2:5] tan(x), "data.1"	with l
X
X	This plots "leastsq.dat" with impulses:
X		plot 'leastsq.dat' w i
X
X
X
X
X   _8.  _p_r_i_n_t
X
X
X   This	command	prints the value of <expression> to the	screen.
X
X   Syntax:
X	   print <expression>
X
X   See 'expressions'.
X
X
X
X
X   _9.  _q_u_i_t
X
X
X
X
X
X			       May 26, 1989
X
X
X
X
X
X
X				 GNUPLOT			Page 11
X
X
X   'quit' is a synonym for 'exit'.  See	'exit'.
X
X
X
X
X   _1_0.	_r_e_p_l_o_t
X
X
X   'replot' repeats the	last 'plot' command.  This can be useful for
X   viewing a plot with different 'set' options,	or when	generating the
X   same	plot for several devices.
X
X
X
X
X   _1_1.	_s_a_v_e
X
X
X   This	command	saves either user-defined functions, variables,	or both
X   to the specified file.
X
X   Syntax:
X	   save	 {option} <filename>
X
X   Where <option> is either 'functions'	or 'variables'.	 If no option
X   is used GNUPLOT saves both functions	and variables.
X
X   'save'd files are written in	text format and	may be read by the
X   'load' command.
X
X   The filename	must be	enclosed in quotes.
X
X   Examples:
X
X	   save	"work.gnu"
X	   save	functions 'func.dat'
X	   save	var 'var.dat'
X
X
X
X
X   _1_2.	_s_e_t-_s_h_o_w
X
X
X   Set or show various internal	gnuplot	settings.
X
X
X
X
X	_1_2._1.  _a_l_l
X
X
X	The command 'show all' will display all	the set-show options
X
X
X
X			       May 26, 1989
X
X
X
X
X
X
X				 GNUPLOT			Page 12
X
X
X	currently in effect.
X
X	Syntax:
X		show all
X
X
X
X	_1_2._2.  _a_u_t_o_s_c_a_l_e
X
X
X	If autoscaling is set, the Y axis is automatically scaled to
X	fit the	range of the function or data being plotted.  If autos-
X	caling is not set, the current Y range is used.	 See 'set
X	yrange'.
X
X	Syntax:
X		set autoscale
X		set noautoscale
X		show autoscale
X
X
X
X	_1_2._3.  _d_u_m_m_y
X
X
X	By default, GNUPLOT assumes that the independent variable is
X	'x' on the 'plot' command line.	 'x' is	called the dummy vari-
X	able because it	is just	a notation to indicate the independent
X	variable.  The 'set dummy' command changes this	default	dummy
X	variable name.	For example, you may find it more convenient to
X	call the dummy variable	't' when plotting time functions:
X
X		set dummy t
X		plot sin(t), cos(t)
X
X	Syntax:
X		set dummy <dummy-var>
X		show dummy
X
X
X
X	_1_2._4.  _f_u_n_c_t_i_o_n_s
X
X
X	The 'show functions' command lists all user-defined functions
X	and their definitions.
X
X	Syntax:
X		show functions
X
X
X
X
X
X
X
X			       May 26, 1989
X
X
X
X
X
X
X				 GNUPLOT			Page 13
X
X
X	_1_2._5.  _l_o_g_s_c_a_l_e
X
X
X	Log scaling may	be set on the X	and/or Y axis.
X
X	Syntax:
X		set logscale <axes>
X		set nologscale
X		show logscale
X
X	Where <axes> is	either 'x', 'y', or 'xy'.
X
X
X
X	_1_2._6.  _p_o_l_a_r
X
X
X	The 'set polar'	command	changes	the meaning of the plot	from
X	rectangular coordinates	to polar coordinates.  In polar	coordi-
X	nates, the dummy variable (x) is an angle.  The	domain of this
X	angle is changed from whatever it was to [0:2*pi].
X
X	The command 'set nopolar' changes the meaning of the plot back
X	to the default rectangular coordinate system.  The domain of x
X	is changed from	whatever it was	to [-10:10].
X
X	While in polar coordinates the meaning of an expression	in x is
X	really r = f(x), where x is an angle of	rotation.  The plot,
X	however, is plotted on a rectangular grid.  Thus the displayed
X	ranges of x and	y are rectanglar values, while the command 'set
X	xrange'	refers to polar	values.
X
X	Syntax:
X		set polar
X		 set nopolar	      show polar
X
X
X
X	_1_2._7.  _o_f_f_s_e_t_s
X
X
X	The amount of the graph	that the plot takes up may be con-
X	trolled	to some	extent with the	'set offsets' command.	This
X	command	takes four arguments--left offset, right offset, top
X	offset and bottom offset.  By default, each offset is 0.  Left
X	and right offsets are given in units of	the x axis, while top
X	and bottom offsets are given in	units of the y axis.  The plot
X	of sin(x), displayed with offsets of 0,	0, 2, 2	will take up
X	1/3 of the displayed y axis.  Offsets are particularly useful
X	with polar coordinates as a means of compensating for aspect
X	ratio distortion.
X
X	Syntax:
X
X
X
X			       May 26, 1989
X
X
X
X
X
X
X				 GNUPLOT			Page 14
X
X
X		set offsets <expr>, <expr>, <expr>, <expr>
X		show offsets
X
X
X
X	_1_2._8.  _o_u_t_p_u_t
X
X
X	By default, plots are displayed	to the standard	output.	 The
X	'set output' command redirects the displays to the specified
X	file or	device.
X
X	Syntax:
X		set output {filename}
X		show output
X
X	The filename must be enclosed in quotes.  If the filename is
X	omitted, output	will be	sent to	the standard output.
X
X
X
X	_1_2._9.  _s_a_m_p_l_e_s
X
X
X	The sampling rate of functions may be changed by the 'set sam-
X	ples' command.	By default, sampling is	set to 160 points.  A
X	higher sampling	rate will produce more accurate	plots, but will
X	take longer.  In generating plots, GNUPLOT will	use either the
X	sampling rate set or the resolution of the current output dev-
X	ice, whichever is lower.
X
X	Syntax:
X		set samples <expression>
X		show samples
X
X
X
X	_1_2._1_0.	_s_t_y_l_e
X
X
X	Plots may be displayed in one of three styles: 'lines',
X	'points', or 'impulses'.  The 'lines' style connects adjacent
X	points with lines. The 'points'	style displays a small symbol
X	at each	point.	The 'impulses' style displays a	vertical line
X	from the X axis	to each	point.
X
X	Default	styles are chosen with the 'set	function style'	and
X	'set data style' commands.  See	'plot' for information about
X	how to override	the default plotting style for individual func-
X	tions.
X
X	Syntax:
X		set function style <style>
X
X
X
X			       May 26, 1989
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X				 GNUPLOT			Page 15
X
X
X		set data style <style>
X		show function style
X		show data style
X
X	Where style is either 'lines', 'points', or 'impulses'.
X
X
X
X	_1_2._1_1.	_t_e_r_m_i_n_a_l
X
X
X	GNUPLOT	supports many different	graphics devices.  Use the 'set
X	terminal' command to select the	type of	device for which GNU-
X	PLOT will produce output.   While your installation may	not
X	include	all of these, the following were available in the
X	source code at the time	this help file was written:
X
X	Machines:  IBM-PC's (ega, cga, hercules), ATT6300, CORONA325,
X		   UNIXPC (att7300 or 3b1);
X	Terminals: AED512, AED767, HP2623A, HP7580B, REGIS, SELENAR,
X		   TEK40xx, BBN	Bitgraph;
X	Printers:  LASERJET1, LASERJET2, LASERJET3, POSTSCRIPT,	QMS,
X		   VECTRIX384;
X	Other:	   UNIXPLOT.
X
X	Syntax:
X		set terminal {terminal-type}
X		show terminal
X
X	If <terminal-type> is omitted, GNUPLOT will list the available
X	terminal types.	 <terminal-type> may be	abbreviated.
X
X	Use 'set output' to redirect this output to a file or device.
X
X
X
X	_1_2._1_2.	_v_a_r_i_a_b_l_e_s
X
X
X	The 'show variables' command lists all user-defined variables
X	and their values.
X
X	Syntax:
X		show variables
X
X
X
X	_1_2._1_3.	_v_e_r_s_i_o_n
X
X
X	Show the current version of gnuplot.  This is the same text
X	that appears when gnuplot starts up.  (There is	no SET VERSION
X	command, of course.)
X
X
X
X			       May 26, 1989
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X				 GNUPLOT			Page 16
X
X
X	Syntax:		SHOW VERSION
X
X
X
X	_1_2._1_4.	_x_r_a_n_g_e
X
X
X	The 'set xrange' command sets the horizontal range which will
X	be displayed.
X
X	This range may also be specified on the	'plot' command line.
X
X	Syntax:
X		set xrange [{xmin : xmax}]
X
X	Where <xmin> and <xmax>	terms are expressions or constants.
X
X	Both the <xmin>	and <xmax> terms are optional.
X
X
X
X	_1_2._1_5.	_y_r_a_n_g_e
X
X
X	The 'set yrange' command sets the vertical range which will be
X	displayed.  This command turns autoscaling OFF.
X
X	This range may also be specified on the	'plot' command line.
X
X	Syntax:
X		set yrange [{ymin : ymax}]
X
X	Where <ymin> and <ymax>	terms are expressions or constants.
X
X	Both the <ymin>	and <ymax> terms are optional.
X
X
X
X	_1_2._1_6.	_z_e_r_o
X
X
X	GNUPLOT	will not plot a	point if its imaginary part is greater
X	in magnitude than the 'zero' threshold.	 The default 'zero'
X	value is 1e-8.
X
X	Syntax:
X		set zero <expression>
X		show zero
X
X
X
X
X
X
X
X
X			       May 26, 1989
X
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X
X
X				 GNUPLOT			Page 17
X
X
X   _1_3.	_s_h_e_l_l
X
X
X   The 'shell' command spawns an interactive shell.  To	return to GNU-
X   PLOT, type 'logout' if using	VMS, 'exit' or your END-OF-FILE	charac-
X   ter if using	Unix, or 'exit'	if using MS-DOS.
X
X   A single shell command may be spawned by preceding it with the !
X   character ($	if using VMS) at the beginning of a command line.  Con-
X   trol	will return immediately	to GNUPLOT after this command is exe-
X   cuted.  For example,
X
X	! dir
X
X   prints a directory listing and then returns to GNUPLOT.
X
X
X
X
X   _1_4.	_s_t_a_r_t__u_p
X
X
X   When	GNUPLOT	is run,	it looks for an	initialization file to load.
X   This	file is	called '.gnuplot' on Unix systems, and 'GNUPLOT.INI' on
X   other systems.  If this file	is not found in	the current directory,
X   the program will look for it	in your	home directory (under MS-DOS,
X   the environment variable GNUPLOT should contain the name of this
X   directory).
X
X   If this file	is found, GNUPLOT executes the commands	in this	file.
X   This	is most	useful for setting your	terminal type and defining any
X   functions or	variables which	you use	often.	The variable 'pi' is
X   already defined for you.
X
X
X
X
X   _1_5.	_s_u_b_s_t_i_t_u_t_i_o_n
X
X
X   Command-line	substitution is	specified by a system command enclosed
X   in backquotes (`).  This command is spawned and the output it pro-
X   duces replaces the name of the command (and backquotes) on the com-
X   mand	line.
X
X   Newlines in the output produced by the spawned command are replaced
X   with	blanks.
X
X   Command-line	substitution can be used anywhere on the GNUPLOT com-
X   mand	line.
X
X
X   Example:
X
X
X
X			       May 26, 1989
X
X
X
X
X
X
X				 GNUPLOT			Page 18
X
X
X   This	will run the program 'leastsq' and substitute `leastsq`	on the
X   command line	with its output:
X
X    f(x) = `leastsq`
X
X   or, in VMS
X
X    f(x) = `run	leastsq`
X
X
X
X
X   _1_6.	_u_s_e_r__d_e_f_i_n_e_d
X
X
X   You may define your own functions and variables.  User-defined func-
X   tions and variables may be used anywhere.
X
X   User-defined	function syntax:
X       <function-name> ( <dummy-var> ) =  <expression>
X
X   Where <expression> is defined in terms of <dummy-var>.
X
X   User-defined	variable syntax:
X       <variable-name> = <constant-expression>
X
X   Examples:
X       w = 2
X       q = floor(tan(pi/2 - 0.1))
X       f(x) = sin(w*x)
X       sinc(x) = sin(pi*x)/(pi*x)
X       delta(t)	= (t ==	0)
X       ramp(t) = (t > 0) ? t : 0
X
X   The variable	'pi' is	already	defined	for you.
X
X   See 'show functions'	and 'show variables'.
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X				 GNUPLOT			      i
X
X
X
X
X
X			    Table of Contents
X
X
X
X
X   clear .........................................................    1
X
X   exit	..........................................................    1
X
X   expressions ...................................................    1
X
X	functions ................................................    1
X
X	     abs .................................................    2
X
X	     acos ................................................    2
X
X	     arg .................................................    2
X
X	     asin ................................................    2
X
X	     atan ................................................    2
X
X	     besj0 ...............................................    2
X
X	     besj1 ...............................................    3
X
X	     besy0 ...............................................    3
X
X	     besy1 ...............................................    3
X
X	     ceil ................................................    3
X
X	     cos .................................................    3
X
X	     cosh ................................................    3
X
X	     exp .................................................    4
X
X	     floor ...............................................    4
X
X	     imag ................................................    4
X
X	     int .................................................    4
X
X	     log .................................................    4
X
X	     log10 ...............................................    4
X
X	     real ................................................    4
X
X
X
X
X
X
X
X
X
X
X				 GNUPLOT			     ii
X
X
X	     sgn .................................................    5
X
X	     sin .................................................    5
X
X	     sinh ................................................    5
X
X	     sqrt ................................................    5
X
X	     tan .................................................    5
X
X	     tanh ................................................    5
X
X	operators ................................................    5
X
X	     binary ..............................................    6
X
X	     unary ...............................................    6
X
X   help	..........................................................    7
X
X   load	..........................................................    7
X
X   pause .........................................................    7
X
X   plot	..........................................................    8
X
X	data_file ................................................    8
X
X	ranges ...................................................    9
X
X	style ....................................................   10
X
X   print .........................................................   10
X
X   quit	..........................................................   11
X
X   replot ........................................................   11
X
X   save	..........................................................   11
X
X   set-show ......................................................   11
X
X	all ......................................................   11
X
X	autoscale ................................................   12
X
X	dummy ....................................................   12
X
X	functions ................................................   12
X
X	logscale .................................................   13
X
X	polar ....................................................   13
X
X
X
X
X
X
X
X
X
X
X				 GNUPLOT			    iii
X
X
X	offsets	..................................................   13
X
X	output ...................................................   14
X
X	samples	..................................................   14
X
X	style ....................................................   14
X
X	terminal .................................................   15
X
X	variables ................................................   15
X
X	version	..................................................   15
X
X	xrange ...................................................   16
X
X	yrange ...................................................   16
X
X	zero .....................................................   16
X
X   shell .........................................................   17
X
X   start_up ......................................................   17
X
X   substitution	..................................................   17
X
X   user_defined	..................................................   18
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X			       May 26, 1989
X
X
END_OF_FILE
echo shar: 544 control characters may be missing from \"'./docs/gnuplot.doc'\"
if test 27576 -ne `wc -c <'./docs/gnuplot.doc'`; then
    echo shar: \"'./docs/gnuplot.doc'\" unpacked with wrong size!
fi
# end of './docs/gnuplot.doc'
fi
echo shar: End of archive 7 \(of 7\).
cp /dev/null ark7isdone
MISSING=""
for I in 1 2 3 4 5 6 7 ; do
    if test ! -f ark${I}isdone ; then
	MISSING="${MISSING} ${I}"
    fi
done
if test "${MISSING}" = "" ; then
    echo You have unpacked all 7 archives.
    rm -f ark[1-9]isdone
else
    echo You still need to unpack the following archives:
    echo "        " ${MISSING}
fi
##  End of shell archive.
exit 0
-- 
	John Campbell               ...!arizona!naucse!jdc
                                    CAMPBELL@NAUVAX.bitnet
	unix?  Sure send me a dozen, all different colors.